QUASIPERMANENT MAGNETS OF HIGH-TEMPERATURE SUPERCONDUCTOR - TEMPERATURE-DEPENDENCE

被引：29

作者：

CHEN, IG

LIU, JX

REN, YR

WEINSTEIN, R

KOZLOWSKI, G

OBERLY, CE

机构：

[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

[2] WRIGHT LAB,DAYTON,OH 45433

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 25期

关键词：

D O I：

10.1063/1.109073

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on persistent field in quasipermanent magnets of high temperature superconductors. Magnets composed of irradiated Y1+Ba2Cu3O7 trapped field B(t) = 1.52 T at 77 K and 1.9 T at lower temperature. However, the activation magnet limited B(t) at lower temperature. We present data on J(c)(HT) for unirradiated materials, and calculate B(t) at various T. Based upon data at 65 K we calculate B(t) in unirradiated single grains at 20 K, and find that 5.2 T will be trapped for grain diameter d approximately 1.2 cm, and 7.9 T for d=2.3 cm. Irradiated grains will trap four times these values.

引用

页码：3366 / 3368

页数：3

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